Nailing tool



J 1930. -J. E. HOFFMAN 1 1,767,926

MAILING TOOL Filed July 11, 1929 3 Sheets-Sheet 2 June 24, 1930. J. E.HJOFFMAN I 1,767,926

NAILING TOOL Filegl gui 11, 1929 s Shets-Sheet a I hammer,

Patented June 24, 193% stars JOHN E. HOFFMAN, OF CASFEB, WYOMING NAILINGTOOL Application filed July 11,

This invention relates to a tool designed for nailing and used bycarpenters, other mechanics or even unskilled persons and itparticularly aims to provide a construc ion 5 adapted for overhead workand one which may be loaded at any angle.

It is further aimed to provi le a novel construction or vmagazinemechanism or ieeding' mechanism in combination with a as 'will behereinafter specifically described with relation to drawingsillustrating the same, and then claimed. v

Additional objects and advantageswill become apparent from aconsideration of the said description and drawings.' In said drawingsFigure 1 is a view of the device in elevation, being partly broken awayto disclose details,

Figure Figure is a cross sectional view taken on the line 33 of Figure1, I

Figure 4t is a vertical sectional view taken on the line 4 4 of Figure 22 is aplan view of the device,

on the line 5-5'of Figure 2,

Figure 6 is a sectional view line 6-6 of Figure 1, v

Figure 7 is a detail vertical sectional view through themagazine-operating knob,

Figure 8 is an elevation of the magazine, and p Figure 9 is a sectionalview taken on the line 9-9 of Figure 5.

Referring specifically to the drawings an elongated barrel is shown at10 which is adapted to receive nails 11 in thereof through a feedopening 13 in the barrel. Such nails are adapted to be driven by a knob1 1 forming a reduced portion of a plunger or hammer 15. Such hammer hasan enlargement 16 which is normally housed in an enlargement 17 of thebarrel 1(). Projections 18 on the enlargement 15 slide in grooves 19 ofthe enlargement 17 whereby the hammer does not turn incidental toreciprocation thereof. T he enlargement 16 may have a head 20 at itsupper end and the enlargement 17 may have a cap 21 screwed to its upperend, and through which the entaken on the hinged thereto at loops of thestrip.

Figure 5 is a vertical sectional View taken the bore 12 1929. Serial No.377,435.

largement 16 passes. "At the base of the enlargement 17, ports 92 may beprovided for he release of trapped air. Carried by the barrel 10 is acasing 23 which is provided with an oiiset portion 2 from the top ofwhich-an integral attaching collar extends which is detachably screwthreaded at 26 to the enlarged portionl'? of the barrel. A rubber gripor sleeve 2'7 may surround the barrel 10 below the casing 23. The upperend of the casing 23 is provided with a closure 28. which is 29 andnormally held closed by a winged screw at 30. i

Rigid with the bottom wall. of the casing 23 and arranged exteriorly ofsuch casing a post 31 around whicha strip or ribbon of paper 32 adaptedto be wrapped and which strip at intervals carries the aforesaid nails11, the same being secured in The screw is threaded into the post 31 atthe 'top ofthe latter. Journaled freely about the lower portion 10'ofthe barrel is a feed magazine 3% generally of cylindrical form asdetailed in Figure 8. Such magazine is adapted to turn on the barrelwith minimum friction to which end ball bearings 35 are interposedbetween the same as shown in Figure l Such barrel has upper solidportions or. $0 collars 36: and '37, from which equidistantly spacedcams 3'8 and 39, respectively extend outwardly. Intermediate the collars36 and 37, the magazine consists of bars, &0-, equidistantly spacedapart, providing equidis. 35 tantly spaced nail receiving slots 11,enlarged at their upper ends as at 12, to accord with the head of thenail.

Within the casing adjacent the magazine, a guide roller a?) is journaledon a vertical. axis and strip 32 is guided between the same and themagazine,-and thence passes out of the casing through an opening L4 inthe enlargement 2 1. It will be seen that the nails 11 are spaced thesame distance apart as 5 the slots a1 and hence the nails enter theslots ll as the strip 39. passes over the magazine, and is moved throughthe rotation of the magazine. The slots 411, successively come intoregistration with the slot 13, so

' zine, that is 7 manual movement of the that the nails may at thedesired time pass nto the bore 12, the same rupturing the loops 33 asthey pass from the slots 41 through the slot 13 into said bore.

Means is provided to operate the magato turn it step by step, in an arc,the distance between adjacentslots 41, and accordingly feed the nailssuccessively into registration with the slot 13. Tothis end, alongitudinally movable knob device is provided at 45 consisting of aknob 46, and a housing 47, the latter having ribs 48 which are movablein slots 49 provided in a keeper plate 50 fastened to the enlargement24, such plate and enlargement having registering slots 51 accommodatinglongitudinal movement of the housing 47.

In the housing 47 a disk'52 is eccentrically pivoted to a pin 53. A nailfeeding frame 54 has a portion disposed in the housing 47 and providedwith a round slot 55 occupied by the disk 52., Such portion 55 has aguide stud 56 which is slidably disposed in a recess 57 of the knob 46and which is normally urged inwardly through the action of an expansivespring 58 housed in said recess 57.

As a result of the construction described, the knob 46 and parts carriedthereby is adapted to be reciprocated longitudinally of the tool andwhen between the extremes of its movement, the spring 58 maintains thefeeding device. 54 in engagement with the adjacent nail 11 and immediateportion of the strip carrying the same whereby the nail is thrust bythe'spring 58 into the bore of the barrel, when theslot 41 carrying suchnail registers with the slot 18. The knob 46 from that position ineither direction, due to the ,rovision of the eccentric disk 52,retracts the member 54 and moves it into engagement with a cam 38 or 39according to the direction of movement, thus rotating the magazine oneslot, and positioning the succeeding nail opposite the slot 13. The nailwhich is supplied into the bore of the barrel is adapted to be driventhrough the operation of the hammer 15 as will be understood.

' After the device 54 engages one of the cams 38 or 39 and has placedthe succeeding nail 11 in place, the knob 46 is moved toward theposition of Figure 5 where the spring 58 and device 54 will again feed anail into the bore of the barrel. The rotation of the magazine thusoccurs a notch 41 at a time, at eachextreme of movement of the knobdevice 45 and the feed of the nail occurs each assumes a positionbetween the extremities of its movement.

Various changes may be resorted to provided they fall within the spiritand scope of the invention.

lVhat is claimed is 1. A nailing tool including a barrel, a

hammer operable in the barrel, a casing through which the barrel passes,interengaging screw threads connecting the barrel and easing together,means to feed nails from the casing into the barrel in the path ofoperation ofthe hammer, a post in the casing rising from the bottomthereof, a closure for the casing, fastening securing the closure tosaid post, said post serving as a means around which a strip containingnails'may be wrapped, a nail feed magazine journaled on the barrel, andguide means in the casing for the strip located relatively close to themagazine. I

2. A nailing tool including a barrel, a hammer operable in the barrel, acasing through which the barrel passes, interengaging screw threadsconnecting the barrel and easing together, means to feed nails from thecasinginto the barrel in the path of operation of the hammer, a post inthe casmg rising from the bottom thereof, a closure for the casing, afastening securing the closure to said 1005-), said post serving as ameans around whicha strip containing nails may be wrapped, a nail feedmagazine journaled on. the barrel, guide means in the easing for thestrip located relatively'close to the magazine, cam means on themagazine, and means operable on the casing engage- V cam means to effectrotation of the magazine.

3. A nailing, device'con'iprising a barrel adapted to receive nails, ahammer to drive the nails operable in the through which the barrelpasses, said casing adapted to abut the barrel and having an integralcollar screw threaded to the barrel, thereby connecting the barrel andcasing together, a nail magazine in the casing engag ing the upper andlower walls thereof and :ournaled on that portion of the barrel eX-tending therethrough, means for holding a strip containing nails inoperative relation to the magazine, and means mounted on the casingoperable to rotate the magazine step by step. I V

A nailing device of the class described comprising a barrel, said barrelhaving a nail feed slot, a magazine journaled on the barrel having slotsthrough which nails are barrel, a casing fed in succession to the firstmentioned slot,

' means operable to rotate the magazine a slot at a time comprising adevice movable longiprojection and retraction of said tudinally of thebarrel, said device including a nail feeding member, means for causingprotection and retraction of said member for the purpose specifiedcomprising a disk mounted eccentrically on said device, said memberhaving an opening occupied by said disk, and an expansive springengaging said member.

In testimony whereof I aflix my signature.

JOHN E. HOFFMAN.

